In other words, 304 cubic centimeters is 0.0000000000000000760 times the size of an Halley's Comet, and the size of an Halley's Comet is 13,000,000,000,000,000.0000000000000000000 times that amount.

(Comet Halley, officially "1P/Halley") (volume calculated based on 2005 dimensions)
Halley's Comet, the famous comet visible to observers on Earth approximately every 76 years, has a peanut- or potato-shaped nucleus made of rock, dust, ice, and various frozen gasses. The nucleus measures approximately 15 km by 8 km by 8 km, which yields a calculated volume of 4,000,000,000,000,000,000.000000000000000000000 cubic centimeters. The coma of the Comet — the trail of sublimated gasses that give the Comet its visibility — may be up to 100,000 km in length.

In other words, 304 cubic centimeters is 0.000000000000000000000220 times the size of Earth's Oceans, and the size of Earth's Oceans is 4,500,000,000,000,000,000,000.000000000000000000000000 times that amount.

In other words, 304 cubic centimeters is 0.00000000000000000012490 times the size of The Gulf of Mexico, and the size of The Gulf of Mexico is 8,006,000,000,000,000,000.00000000000000000000000 times that amount.